From: Richard Henderson <richard.henderson@linaro.org>
To: Paolo Bonzini <pbonzini@redhat.com>, qemu-devel@nongnu.org
Cc: qemu-block@nongnu.org, peter.maydell@linaro.org, cohuck@redhat.com
Subject: Re: [Qemu-devel] [PATCH 4/9] coroutine: add host specific coroutine backend for 64-bit ARM
Date: Sun, 5 May 2019 10:00:50 -0700 [thread overview]
Message-ID: <c5f2f531-34ce-d7b2-a6d7-1a2399466cf5@linaro.org> (raw)
In-Reply-To: <20190504120528.6389-5-pbonzini@redhat.com>
On 5/4/19 5:05 AM, Paolo Bonzini wrote:
> The speedup is similar to x86, 120 ns vs 180 ns on an APM Mustang.
>
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> ---
> configure | 2 +-
> scripts/qemugdb/coroutine_asm.py | 6 ++++-
> util/Makefile.objs | 2 ++
> util/coroutine-asm.c | 45 ++++++++++++++++++++++++++++++++
> 4 files changed, 53 insertions(+), 2 deletions(-)
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
> + "ldr x30, [x1, %[SCRATCH]]\n" /* load destination PC */ \
> + "ldr x1, [x1, %[SP]]\n" /* load destination SP */ \
> + "mov sp, x1\n" \
> + "br x30\n" \
> + "2: \n" \
For future reference, "bti j" (aka hint #36) goes here,
for the aarch64 branch target identification extension.
r~
WARNING: multiple messages have this Message-ID (diff)
From: Richard Henderson <richard.henderson@linaro.org>
To: Paolo Bonzini <pbonzini@redhat.com>, qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org, cohuck@redhat.com, qemu-block@nongnu.org
Subject: Re: [Qemu-devel] [PATCH 4/9] coroutine: add host specific coroutine backend for 64-bit ARM
Date: Sun, 5 May 2019 10:00:50 -0700 [thread overview]
Message-ID: <c5f2f531-34ce-d7b2-a6d7-1a2399466cf5@linaro.org> (raw)
Message-ID: <20190505170050.XKdSEwiWWMs9ZuZ5shgYSVQXwv64FNMme3wqrP4jmt4@z> (raw)
In-Reply-To: <20190504120528.6389-5-pbonzini@redhat.com>
On 5/4/19 5:05 AM, Paolo Bonzini wrote:
> The speedup is similar to x86, 120 ns vs 180 ns on an APM Mustang.
>
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> ---
> configure | 2 +-
> scripts/qemugdb/coroutine_asm.py | 6 ++++-
> util/Makefile.objs | 2 ++
> util/coroutine-asm.c | 45 ++++++++++++++++++++++++++++++++
> 4 files changed, 53 insertions(+), 2 deletions(-)
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
> + "ldr x30, [x1, %[SCRATCH]]\n" /* load destination PC */ \
> + "ldr x1, [x1, %[SP]]\n" /* load destination SP */ \
> + "mov sp, x1\n" \
> + "br x30\n" \
> + "2: \n" \
For future reference, "bti j" (aka hint #36) goes here,
for the aarch64 branch target identification extension.
r~
next prev parent reply other threads:[~2019-05-05 17:01 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-04 12:05 [Qemu-devel] [PATCH 0/9] Assembly coroutine backend and x86 CET support Paolo Bonzini
2019-05-04 12:05 ` Paolo Bonzini
2019-05-04 12:05 ` [Qemu-devel] [PATCH 1/9] qemugdb: allow adding support for other coroutine backends Paolo Bonzini
2019-05-04 12:05 ` Paolo Bonzini
2019-05-04 12:05 ` [Qemu-devel] [PATCH 2/9] qemugdb: allow adding support for other architectures Paolo Bonzini
2019-05-04 12:05 ` Paolo Bonzini
2019-05-04 12:05 ` [Qemu-devel] [PATCH 3/9] coroutine: add host specific coroutine backend for 64-bit x86 Paolo Bonzini
2019-05-04 12:05 ` Paolo Bonzini
2019-05-05 16:52 ` Richard Henderson
2019-05-05 16:52 ` Richard Henderson
2019-05-04 12:05 ` [Qemu-devel] [PATCH 4/9] coroutine: add host specific coroutine backend for 64-bit ARM Paolo Bonzini
2019-05-04 12:05 ` Paolo Bonzini
2019-05-05 17:00 ` Richard Henderson [this message]
2019-05-05 17:00 ` Richard Henderson
2019-05-09 13:15 ` Stefan Hajnoczi
2019-05-04 12:05 ` [Qemu-devel] [PATCH 5/9] coroutine: add host specific coroutine backend for 64-bit s390 Paolo Bonzini
2019-05-04 12:05 ` Paolo Bonzini
2019-05-05 17:10 ` Richard Henderson
2019-05-05 17:10 ` Richard Henderson
2019-05-04 12:05 ` [Qemu-devel] [PATCH 6/9] configure: add control-flow protection support Paolo Bonzini
2019-05-04 12:05 ` Paolo Bonzini
2019-05-04 12:05 ` [Qemu-devel] [PATCH 7/9] tcg: add tcg_out_start Paolo Bonzini
2019-05-04 12:05 ` Paolo Bonzini
2019-05-04 12:05 ` [Qemu-devel] [PATCH 8/9] tcg/i386: add support for IBT Paolo Bonzini
2019-05-04 12:05 ` Paolo Bonzini
2019-05-05 17:14 ` Richard Henderson
2019-05-05 17:14 ` Richard Henderson
2019-05-04 12:05 ` [Qemu-devel] [PATCH 9/9] linux-user: add IBT support to x86 safe-syscall.S Paolo Bonzini
2019-05-04 12:05 ` Paolo Bonzini
2019-05-04 12:05 ` [Qemu-devel] [PATCH 10/9] coroutine-asm: add x86 CET shadow stack support Paolo Bonzini
2019-05-04 12:05 ` Paolo Bonzini
2019-05-05 15:41 ` [Qemu-devel] [PATCH 0/9] Assembly coroutine backend and x86 CET support Alex Bennée
2019-05-05 15:41 ` Alex Bennée
2019-05-09 13:44 ` Peter Maydell
2019-05-15 9:48 ` [Qemu-devel] [Qemu-block] " Stefan Hajnoczi
2019-05-16 12:50 ` Peter Maydell
2019-05-22 10:02 ` Paolo Bonzini
2019-05-09 13:29 ` [Qemu-devel] " Stefan Hajnoczi
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